>>116
英語が苦手なのでこの辺からわからなくなりました。
frostとはどういうことかイメージできません。よろしくお願いします。

My solution has been to use _frosted_ microscope slides.

By frosted, I mean slides that are sandblasted to provide a surface for marking
the slide with a pen (not slides that are _painted_ for the same purpose).

I favor slides that are frosted on one end and only on one side.
Full-frosted cytology slides might also work, but I have not yet tried them.

Anyway, these partially frosted slides work (for me, anyway) as follows: